Power the camera over coaxial cable 1000' of belden 1855a

Hello Barry, 

  Please provide more detailed information as to your design requirements.  Are you asking for a power supply design that can provide power to the camera?  Or a way to provide power and signal through the coax cable? 

  Since the camera you are referring to is not a TI device, have you contacted the camera manufacturer to ask for a recommendation?  I think this would be the first course of action. 

Regards,

~Leonard  

www.alibaba.com/.../HD-PVT-coax-video-transmitter_60528766139.html

This is a link to a China made multiplexer that does what i want it to do, but i am concerned about the future of buying from China and would like to be able to produce a device that could replace it

Hello Barry,

As you know, TI does not produce end products, but we do have Reference Designs available.  Please review the Reference Designs, the Interface section might be a good starting point:  https://www.ti.com/reference-designs/index.html#search?famid=361,747 . 

I also see you have posted this same question here: https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1088833/power-the-camera-over-coaxial-cable-1000-of-belden-1855a-2 , so let's consider combining these and deleting one. 

Regards,

~Leonard